利用小光斑激光雷达估测林分参数和生物量

为弥补小光斑激光雷达在林业研究中应用较少起步较晚,且研究结果精度不高的缺点,利用软件TerraScan及小光斑雷达数据自身的优点,对小兴安岭凉水地区的航拍数据进行了研究,并在此基础上估测了树高、胸径等林分参数及生物量,其精度均达到了90%以上,能够满足实际生产的需要。其中:树高的估测精度最高,为97%,表明小光斑激光雷达能够高效率、高精度地提供多种林分参数,可为林业生产及时准确地提供必要的数据支持。

Estimation of Forest Stand Parameters and Biomass by Small-Footprint Lidar

Small-footprint lidar,having a late start,is used less in forestry research,and the precision of the research result by small-footprint lidar is not high.To compensate for the shortcomings of small-footprint lidar,the aerial data of Liangshui National Nature Reserve in Xiaoxing’an Mountains were studied by the existing software TerraScan,combined with the advantages of small-footprint lidar.Biomass and other stand parameters such as tree height,diameter at breast height,and etc.were estimated.Results show that the prediction accuracies of different stand parameters reach more than 90%,which can meet the requirement for actual production.The accuracy of tree height estimation is up to 97%.The small-footprint lidar can provide a wide variety of efficient forest parameters with high precision,which can supply accurate,timely and necessary data for forestry production.